Chris Whaley may be the answer

I borrowed all this from www.burntorangenation.com

"For those who wonder how in the name of Earl Campbell and Ricky Williams a Longhorns quarterback could be the football team's leading rusher, help is on the way. It will show up this summer in the form of a 6-foot-3, 239-pound bruiser whose high school head coach describes as "similar" to but not as fast as Adrian Peterson and whom others compare to the upright, physical Eric Dickerson. O-kay."

If you don't watch the whole thing, at least pull the strip along to the last minute and watch him come out of the backfield and catch the ball.  That's encouraging too!